General chemistry

General chemistry

Industry: Chemistry

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General chemistry

Thermistor

Chemistry; General chemistry

A device that senses temperature changes by using a resistor with an electrical resistance that falls when temperature rises.

Alkalinity

Chemistry; General chemistry

A measure of a material's ability to neutralise acids . Alkalinities are usually determined using titration .

Empirical formula

Chemistry; General chemistry

Empirical formulas show which elements are present in a compound, with their mole ratios indicated as subscripts. For example, the empirical formula of glucose is CH2O, which means that for every ...

Neutral

Chemistry; General chemistry

1. having no net electrical charge. Atoms are electrically neutral; ions are not. 2. A solution containing equal concentrations of H+ and OH-.

Thermochemical equation

Chemistry; General chemistry

An compact equation representing a chemical reaction that describes both the stoichiometry and the energetics of the reaction. For example, the thermochemical equation CH4(g) + 2 O2(g) CO2(g) + 2 ...

Calibration

Chemistry; General chemistry

Calibration is correcting a measuring instrument by measuring values whose true values are known. Calibration minimises systematic error .

A nonpolar molecule or group that has little affinity for water. Hydrophobic groups on molecules in solution tend to turn in on themselves or clump together with other hydrophobic groups because they ...